Draft-regulator for locomotives



No. 702,005. Patented June 10, |902.-

' U. HURENZ.

DRAFT REGULATOR FOR LOCOMOTIVES.

(Application fild Jan. 29, 1901.)

WITNESSES: I INVENTOR @MMM 0w? zam. r

' AT/ORNEY.

- useful Improvements in Draft-Regulators for To all whom it mayconcern.-

throughthe exhaust-pipeas, for instance,

UNITED STATES PATENT I OFFICE.

OTTO HORENZ, OF DRESDEN, GERMANY.

DRAFT-REGULATOR FOR LOCOMOTIVES.

SPECIFICATION formingpart of Letters Patent No. 702,005, dated June 10,1902.

Application filed January 29, 1901.

Be it knownthat I, OTTO HoRENz, a citizen of the Kingdom of Prussia,residing at Dresden, in the Kingdom of Saxony and Empire of Germany,have invented certain new and Locomotives; and I do declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the letters of reference marked thereon, which form a part ofthis specification.

This invention relates to a'device for regulating the draft inlocomotives, being especially designed to prevent a too strong draftwith its consequent evils from arising when an unusually large amount ofsteam escapes in overcoming an upgrade when there is a large consumptionof steam by thecylinders or in starting, especially when the wheelsslide on the rails.

The invention is illustrated in Figures land 2 of the accompanyingdrawings.

It consists in a valve a, arranged in the exhaust-pipe b in such amanner that by its operation the surplus of steam accountable for thetoo strong draft may be directed aside or the effective current ofsteamso weakened that the draft never exceedsa certain maxi mum. Theautomatic operation of the valve may be eifected by the increase of thesteampressure or of the draft with the aid of various devices.

The device shown in Fig. 1 consists of a piston 0, arranged to move in acylinder (1, communicating with the exhaust-pipe b and connected througha rod 9 with an arm f of the valve a. (Here represented as adampervalve.) A rod g, firmly connected with the piston, is fittedthrough an opening of the cylinder-top h to further guide the piston,and a screw-spring acts on the latter to normally press it downward." Inthis device the piston c is raised when the exhaust of steam increasesand by means of rod e and arm f the valve operated, so as to weaken thecurrent of steam.

The device shown in Fig. 2 consists of a valve m in the branch pipe 1:.of the exhaustpipe I), which transmits motion by an angu- Serial No.46,218. (No model.)

lar rod 0 to the arm f of the valve a. When the amountof steam exhaustedincreases, the valve m is raised and by the intermediate parts 0 and fthe valve a again turned into the position shown by broken lines in Fig.2, the effective current of steam being thus weakened, as the freeopening left by valve a is diminished and part of the steam let ofithrough pipe n, thus not contributing toward producing draft.

The valve a might be operated by still other devices, and I thereforedonot restrict myself to those named, but desire my claims to beextended generally to all valves operated by the increase of the draftor the exhaust of steam with the aid of any suitable organ.

Instead of in the smoke-box the valve a controlling means.

2. An exhaustregulator .for locomotives comprising an exhaust-pipe,avalve pivoted therein, a branch pipe connected directly to theexhaust-pipe a valve-seat'therein, a valve in the branch pipe, means tohold the said valve in position on the valve-seat, and means extendingthrough the exhaust pipe and branch pipe to connect the respectivevalves in the said pipes. V

' 3. An exhaust-regulator for locomotives comprising an exhaust-pipe, avalve located therein, a branch pipe connected to the exhaust-pipe'andprovided with a valve-seat, a valve in thebranch pipe normally heldclosed by a spring, means to regulate the tension on I the spring andmeans extending through the branch pipe to connect the respectivevalves. In testimony whereof I affix my signature in presence of twowitnesses.

OTTO HORENZ.

Witnesses: v

HERNANDO DE Soro, EMIL REISHELT.

